U.S. patent application number 09/742064 was filed with the patent office on 2002-06-27 for cord winding device for large-size sunshade.
Invention is credited to Liu, Chia-Lin.
Application Number | 20020079398 09/742064 |
Document ID | / |
Family ID | 24983355 |
Filed Date | 2002-06-27 |
United States Patent
Application |
20020079398 |
Kind Code |
A1 |
Liu, Chia-Lin |
June 27, 2002 |
Cord winding device for large-size sunshade
Abstract
Cord winding device for large-size sunshade, including a seat
body, a tube body and a cord winder. The seat body is tightly
fitted around the tube body. The cord winder is passed through two
sides of the seat body and tube body. The cord winder is composed
of a locating seat and a crank movably connected with the locating
seat. The locating seat is connected with the seat body. An outer
circumference of the locating seat is formed with multiple oblique
recesses which are serially connected to form an annular face. A
locating block outward projects from upper side of the crank. A
front end of a bent insertion pin is passed through a through hole
of the locating block and fitted with a resilient member. A locking
member is disposed on the crank for cooperatively for winding a
cord.
Inventors: |
Liu, Chia-Lin; (Chiayi City,
TW) |
Correspondence
Address: |
DAVID E. DOUGHERTY
DENNISON, SCHULTZ & DOUGHERTY
612 CRYSTAL SQUARE 4
1745 JEFFERSON DAVIS HIGHWAY
ARLINGTON
VA
22202
US
|
Family ID: |
24983355 |
Appl. No.: |
09/742064 |
Filed: |
December 22, 2000 |
Current U.S.
Class: |
242/395 ;
135/20.3 |
Current CPC
Class: |
A45B 2025/146 20130101;
A45B 25/14 20130101 |
Class at
Publication: |
242/395 ;
135/20.3 |
International
Class: |
B65H 075/30; B65H
075/38; A45B 025/14 |
Claims
What is claimed is:
1. Cord winding device for large-size sunshade, comprising a seat
body, a tube body and a cord winder, the seat body being tightly
fitted around the tube body, the cord winder being passed through
two sides of the seat body and tube body, said cord winding device
being characterized in that: the seat body is formed with a
vertical hollow section in which the tube body is tightly fitted,
two sides of the seat body and tube body being respectively formed
with through holes through which the cord winder is passed; and the
cord winder is composed of a locating seat and a crank movably
connected with the locating seat, the locating seat being formed
with a central through hole, an outer circumference of the locating
seat being formed with multiple oblique recesses which are serially
connected into an annular face, the locating seat being connected
with the seat body, a handle being disposed on one side of lower
end of the crank, an upper end of the crank having a profile
corresponding to the locating seat, a locating block outward
projecting from upper side of the crank, a lower side of the
locating block being formed with a tapered slope arch face, a rear
end of the slope arch face being immediately adjacent to a stop
face, the locating block being formed with a socket corresponding
to the oblique recess of the locating seat, one side of socket
being formed with a through hole, a front end of a bent insertion
pin being passed through the through hole and the socket and fitted
with a resilient member, the crank cooperating with a locking
member for winding the cord.
2. Cord winding device for large-size sunshade as claimed in claim
1, wherein two cavities are respectively formed on two sides of the
seat body, a through hole with smaller diameter inward extending
from each of the cavities in which the cord winder is mounted.
3. Cord winding device for large-size sunshade as claimed in claim
1, wherein a flange is formed on the outer circumference of the
locating seat and the locating seat is inlaid in the cavity of one
side of the seat body, the locating seat being formed with multiple
thread holes, screws being screwed into the thread holes to lock
the locating seat on the seat body.
4. Cord winding device for large-size sunshade as claimed in claim
1, wherein the resilient member fitted with the front end of the
bent insertion pin is a spring, the front end of the insertion pin
being formed with a notch for connecting with a fastening ring,
whereby the insertion pin is retractable and extensible.
5. Cord winding device for large-size sunshade as claimed in claim
1, wherein the upper end of the crank is formed with a rectangular
perforation and a rear end of the locking member is formed with a
rectangular engaging block fitted in the rectangular perforation
for winding the cord.
6. Cord winding device for large-size sunshade as claimed in claim
1 or 5, wherein the locking member is a pin shaft which is
sequentially passed through the crank, the locating seat, the seat
body and the tube body and inserted into a cap member having a
flange and inlaid in the cavity of the other side of the seat body,
a front end of the pin shaft being formed with a thread section on
which nuts are screwed, a center of the pin shaft being formed with
a through hole for the cord to pass therethrough.
7. Cord winding device for large-size sunshade as claimed in claim
5, wherein the perforation of the crank is polygonal and the
engaging block of the locking member is also polygonal
corresponding to the perforation of the crank for winding the cord.
Description
BACKGROUND OF THE INVENTION
[0001] The present invention relates to a cord winding device for
large-size sunshade, and more particularly to a cord winding device
in which a cord winder is passed through two sides of a seat body
and can be easily operated for stretching or collapsing a
large-size sunshade or the like. The cord winding device also is
able to firmly locate the sunshade after stretched.
[0002] A conventional cord winding device for large-size sunshade
including a main tube, a push rod, a rotary cylinder driving
mechanism, a cord body and a C-shaped fixing hoop. The main
transmission elements are received in the main tube. A hive-like
collar is fitted with upper side of the main tube for connecting
with ribs. The central stem is passed through the collar to extend
into the main tube. A certain portion of the main tube is formed
with a through hole at which the rotary cylinder driving mechanism
is pivotally disposed. The push rod via a fixing plate is inlaid in
the central stem. The bottom end of the push rod via a pin member
is pivotally connected with an elongated link. The rotary cylinder
driving mechanism has a rotary cylinder transversely disposed in
the main tube. A long rotary shaft is inserted in the rotary
cylinder. Two ends of the rotary shaft are passed through the main
tube. One of the two ends is fitted with a rocking lever. An
annular flange is formed on middle portion of the rotary shaft. One
end of the cord body is connected with the bottom end of the push
rod, while the other end thereof is connected with the bottom end
of the link. The cord body can pass through the annular flange of
the rotary cylinder to form winding sections in different winding
directions. The inner circumference of the C-shaped fixing hoop is
formed with locating toothed face. When rotating the rocking lever,
the link and the cord body push and drive the central stem to move
up and down within the main tube so as to stretch or collapse the
sunshade. However, the locating toothed face of the fixing hoop
makes it uneasy and inconvenient to operate the winding device in
both directions. In addition, the locating effect is poor.
Moreover, the cord body is passed through the annular flange of the
rotary cylinder so that after a long period of use, the cord body
tends to be worn out.
SUMMARY OF THE INVENTION
[0003] It is therefore a primary object of the present invention to
provide a cord winding device for large-size sunshade in which the
insertion pin of the crank is leant on the oblique recess of the
locating seat of the cord winder so that the cord can be
continuously one-way wound for stretching the sunshade. Also, the
crank is prevented from being cranked backward and can be firmly
located.
[0004] It is a further object of the present invention to provide
the above cord winding device in which when the insertion pin is
leant against the stop face of the locating block, the crank can be
cranked in both directions for stretching and collapsing the
sunshade. Therefore, the operation is facilitated.
[0005] According to the above objects, the cord winding device for
large-size sunshade of the present invention includes a seat body,
a tube body and a cord winder. The seat body is tightly fitted
around the tube body. The cord winder is passed through two sides
of the seat body and tube body. The cord winder is composed of a
locating seat and a crank movably connected with the locating seat.
The locating seat is formed with a central through hole. An outer
circumference of the locating seat is formed with multiple oblique
recesses which are serially connected into an annular face. The
locating seat is connected with the seat body. A handle is disposed
on one side of lower end of the crank. An upper end of the crank
has a profile corresponding to the locating seat. A locating block
outward projects from upper side of the crank. A lower side of the
locating block is formed with a tapered slope arch face. A rear end
of the slope arch face is immediately adjacent to a stop face. The
locating block is formed with a socket corresponding to the oblique
recess of the locating seat. One side of socket is formed with a
through hole. A front end of a bent insertion pin is passed through
the through hole and the socket and fitted with a resilient member.
The crank cooperates with a locking member for winding the
cord.
[0006] The present invention can be best understood through the
following description and accompanying drawings wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a perspective assembled view of the present
invention;
[0008] FIG. 2 is a perspective exploded view of the present
invention;
[0009] FIG. 3 is a sectional view taken along line 3-3 of FIG. 1,
showing the relationship between the seat body, tube body and cord
winder of the present invention;
[0010] FIG. 4 is a sectional view taken along line 4-4 of FIG. 1,
showing the relationship between the locating seat, insertion pin
and crank of the present invention;
[0011] FIGS. 5a, 5b and 5c are plane view, sectional view taken
along line 5-5 of FIG. 1 and perspective view, showing that the
insertion pin is movably leant against the locating seat of the
present invention;
[0012] FIGS. 6a, 6b and 6c are plane view, sectional view and
perspective view, showing that the insertion pin is detached from
the locating seat of the present invention; and
[0013] FIG. 7 shows the operation of the cord winding device of the
present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] Please refer to FIGS. 1, 2 and 3. The cord winding device
for large-size sunshade of the present invention includes a seat
body 1, a tube body 2 and a cord winder 3.
[0015] The seat body 1 is formed with a vertical hollow section in
which the tube body 2 is tightly fitted. Two cavities 11, 13 are
respectively formed on two sides of the seat body 1. A through hole
12 with smaller diameter inward extends from the cavity 11, while
another through hole 14 with smaller diameter inward extends from
the cavity 13. The through holes 12, 14 are aligned with two
through holes 21, 22 of the tube body 2.
[0016] The cord winder 3 is composed of a locating seat 31, a crank
32, an insertion pin 33, a cap member 38 and a pin shaft 37.
[0017] The locating seat 31 is formed with a central through hole
312. Multiple thread holes 311 are formed around the through hole
312. The outer circumference of the locating seat 31 is formed with
multiple oblique recesses 313 which are serially connected into an
annular face. A flange 314 is formed on the outer circumference of
the locating seat 31. The locating seat 31 is inlaid in the cavity
11 of the seat body 1. Screws 34 are screwed into the thread holes
311 to lock the locating seat 31 on the seat body 1.
[0018] A handle 321 is disposed on one side of lower end of the
crank 32. The upper end of the crank 32 has a profile corresponding
to the locating seat 31. A locating block 322 outward projects from
upper side of the crank 32. The lower side of the locating block
322 is formed with a tapered slope arch face 323. A rear end of the
slope arch face 323 is immediately adjacent to a stop face 324. The
locating block 322 is formed with a socket 326 corresponding to the
oblique recess 313 of the locating seat 31. One side of socket 326
is formed with a through hole 327. A front end of the bent
insertion pin 33 is passed through the through hole 327 and the
socket 326 and fitted into a spring 36. The front end of the
insertion pin 33 is formed with a notch 331 for connecting with a
fastening ring. The upper end of the crank 32 is formed with a
central rectangular perforation 325 for the pin shaft 37 to pass
therethrough.
[0019] The pin shaft 37 is sequentially passed through the crank
32, the locating seat 31, the seat body 1 and the tube body 2 and
inserted into the cap member 38 having a flange 382. The front end
of the pin shaft 37 is formed with a thread section 373 on which
two nuts are screwed. A rectangular engaging block 372 is formed
under a pin head formed at the other end the pin shaft 37. The
engaging block 372 is engaged in the rectangular perforation 325 of
the crank 32. The center of the pin shaft 37 is formed with a
through hole 371 for a cord to pass therethrough.
[0020] Please refer to FIGS. 2 and 3. The cord winder 3 is fitted
in the seat body 1 and the tube body 2 for easily stretching or
collapsing a large-size sunshade. The engaging block 372 of the pin
shaft 37 is engaged in the perforation 325 of the crank 32 so that
by means of cranking the crank 32, the pin shaft 37 is rotated
along with the crank 32. At this time, the bent insertion pin 33
fitted in the locating block 322 of the crank 32 will be wavily
transversely moved along the oblique recesses 313 of the locating
seat 31. The fastening ring 35 connected with the insertion pin 33
will compress the spring 36 when gradually moving to the higher
portion of the oblique recess 313. When moving to the adjacent
oblique recess 313, the restoring force of the spring 36 again
pushes the front end of the insertion pin 33 to lean on the oblique
recess 313. Therefore, the cord can be continuously one-way wound
for stretching the sunshade. When cranked in reverse direction, the
front end of the insertion pin 33 will abut against the stop face
315 of the oblique recess 313 so that the crank 32 is prevented
from being cranked backward and is well located.
[0021] Please refer to FIGS. 2, 4, 5a to 5c and 6a to 6c. When
turning the bent insertion pin 33, the insertion pin 33 will
gradually slide out along the tapered slope arch face 323 formed on
lower side of the locating block 322 of the crank 32. At this time,
the fastening ring 35 connected with the insertion pin 33 will
compress the spring 36 and finally lean against the stop face 324
of the locating block 322. At this time, the bent insertion pin 33
will be detached from the locating seat 31. Under such
circumstance, when rotated, the insertion pin 33 will not contact
with the respective oblique recesses 313 of the locating seat 31 so
that the crank 32 can be cranked in both directions for stretching
and collapsing the sunshade.
[0022] Referring to FIG. 7, in use, after the seat body 1, tube
body 2 and the cord winder 3 are assembled, the crank 32 can be
cranked to easily stretch the large-size sunshade for shading
sunlight. The sunshade can be easily operated and reliably
located.
[0023] In FIG. 2, the central perforation of the crank and the
engaging block of the pin shaft are both rectangular. However, the
perforation of the crank and the engaging block of the pin shaft
can be alternatively formed with identical polygonal shape to
achieve the same driving effect.
[0024] According to the above arrangement, the present invention
has the following advantages:
[0025] 1. The insertion pin of the crank is leant on the oblique
recess of the locating seat so that the cord can be continuously
one-way wound for stretching the sunshade. The crank is prevented
from being cranked backward and can be firmly located.
[0026] 2. When the insertion pin is leant against the stop face of
the locating block, the crank can be cranked in both directions for
stretching and collapsing the sunshade.
[0027] The above embodiments are only used to illustrate the
present invention, not intended to limit the scope thereof. Many
modifications of the above embodiments can be made without
departing from the spirit of the present invention.
* * * * *